Extracellular superoxide anion production contributes to the virulence of Xanthomonas oryzae pv. oryzae

被引:0
作者
Li, Xin [1 ,2 ]
Pang, Xinyue [2 ]
Zhi, Dejuan [1 ]
Wang, Jinsheng [3 ]
Li, Minquan [4 ]
Li, Hongyu [1 ]
机构
[1] Lanzhou Univ, MOE Key Lab Arid & Grassland Ecol, Sch Life Sci, Lanzhou 730000, Peoples R China
[2] Henan Univ Sci & Technol, Food & Bioengn Coll, Luoyang 471000, Peoples R China
[3] Nanjing Agr Univ, Key Lab Monitoring & Management Plant Dis & Pests, Minist Agr, Dept Plant Protect, Nanjing 210095, Peoples R China
[4] Gansu Agr Univ, Dept Plant Protect, Lanzhou 730060, Peoples R China
基金
中国国家自然科学基金;
关键词
electron spin resonance; superoxide anion; virulence; Xanthomonas oryzae pv. oryzae; HYDROGEN-PEROXIDE; OXIDATIVE BURST; ENTEROCOCCUS-FAECALIS; ESCHERICHIA-COLI; INFECTION; STRESS; INVOLVEMENT; COMPONENTS; RESISTANCE; PATHWAY;
D O I
10.1139/W08-112
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Endogenous superoxide anion production was determined by electron spin resonance in wild-type strains and avrXa7 mutants of Xanthomonas oryzae pv. oryzae. The localization of superoxide anion was carried out in the intra- and extra-cellular fractions. Results showed the presence of superoxide anion in multi-locations of X. oryzae pv. oryzae cells. The extracellular fraction was the major location of superoxide anion production. Furthermore, a positive relationship was shown between the levels of endogenous superoxide anion and the virulence of strains. These indubitable results suggested that the superoxide anion contributes to the virulence of X. oryzae pv. oryzae.
引用
收藏
页码:110 / 116
页数:7
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